<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* div{
            width: 0px;
            height: 0px;
            margin: 0 auto;
        } */
        /* #div1{
            border: 50px solid red;
            border-radius: 50%;
            border-bottom-color:green;
            border-left-color: transparent;
            border-right-color: transparent;
        }
        #div2{
            border: 50px solid red;
            border-radius: 50%;
            border-right-color: transparent;
        }
        #div3{
            width: 500px;
            height: 300px;
            border: 1px solid red;
            overflow: hidden;
        } */
        #news{
            width: 834px;
            padding: 0px 5px 0px;
            border-top: 4px solid #666;
            border-left: 1px solid #ccc;
            border-right: 1px solid #ccc;
            border-bottom: 1px solid #ccc;
            box-shadow: 5px 5px 10px;
            margin: 0 auto;
        }
        ul{
            padding: 0;
            padding-bottom: 0;
            margin: 0;
            list-style-type: none;
            margin-bottom: -1px;
        }
        ul>li{
            border-bottom: solid 1px #ccc;
            padding: 10px;
        }
        span{
            /* 内联元素转成块元素 */
            display:inline-block;
            width: 30px;
            text-align: center;
            font-size: 25px;
            font-weight: bold;
        }

    </style>
</head>
<body>
    <div id="div1">

    </div>
    <div id="div2">

    </div>
    <div id="news">
        <ul>
            <li><span>1</span>媒体：病毒</li>
            <li><span>2</span>媒体：联合</li>
            <li><span>3</span>媒体：国家</li>
            <li><span>4</span>媒体：内</li>
        </ul>
    </div>
</body>
</html>